SOLUTION: Po is trying to solve the following equation by completing the square: 49x^2+56x-64 = 0. He successfully rewrites the above equation in the following form: (ax + b)^2 = c,where a,

Question 1086038: Po is trying to solve the following equation by completing the square: 49x^2+56x-64 = 0. He successfully rewrites the above equation in the following form: (ax + b)^2 = c,where a, b, and c are integers and a > 0. What is the value of a + b + c?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
49x^2+56x-64 = 0
49x^2+56x=64
(7x+4)^2=64+16
(7x+4)^2=80
a+b+c=7+4+80=91 ANSWER
7x+4 should equal about 9, so the root about 5/7; 7x+4 should equal about -9, so root about -1.9.

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